Question about Umax Astra 3400 Flatbed Scanner

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Scanner leaves lines like watermarks in an image

Photos are scanned at different resolutions and formats; they always have these vertical lines in the image. How do I fix?

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  • Umax Master
  • 19,396 Answers

The scanner must be cleaned internally.

If you get same problem after cleaning the scanner, then this is caused by a defective sensor array (the device that "capture" the picture) inside the scanner.

Posted on Feb 09, 2009

  • Ginko
    Ginko Feb 09, 2009

    You need to take apart the scanner, and clean the glass and the mirror surface.
    More likely you will have to replace the array sensor assembly, that is that bar near to the lamp.


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Hi,

The problem you describe sounds like moire.

Try scanning the image at different resolutions until the effect disappears.

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A yellow vertical line on the copy, which now takes half the page.


What causes the lines in an image?

Lines or Banding Within the Image

If the scanner is generating lines or banding within the image during preview and/or scan, below is a list of possible solutions.

Horizontal Lines: If the lines run horizontally throughout the image, it is almost definitely interference of some kind. First thing to try is reverse the cable (Astra series only, except for 2400S), trying with and without termination as well. It could also be the SCSI card itself that is causing the interference. Try reseating it in a different slot, away from other cards. Try moving the scanner itself to another location, farther away from computer components such as monitors and CPUs. If none of that works, search for the file ?prescan.dib? on the hard disk and delete it, then try the scan again. If that still doesn?t work, follow the clean uninstall and safe mode install of our software. If these troubleshooting steps do not work, it could be a physical defect within the cable that?s generating extra interference, and the cable should be replaced. If the cable has been replaced already, it may be the UDS-IS11 itself generating the interference from being defective. Replace it.

Vertical Lines: If the lines run vertically throughout the image, it is probably a hardware problem, most likely with the scanner itself. However, follow the cable-reversing instructions above, remove the ?prescan.dib? file, and try the scan again. Often, if they are thin lines they are from dust within the optics. Open the case and blow out the dust with compressed air.

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Canon scanner speed slow


Various ways....Try these! the slow problem wil get off

How to change the resolution (Windows)
The precision of printouts can be improved by changing scanning resolution.
The higher the scanning resolution is, the more precise the scanned images are represented, however, the file size gets larger.
The scanning resolution can be changed before scanning photos.
Note: When the scanning resolution is doubled, the image data size will be quadrupled.
When the data size is large, the throughput speed may slow down or may occupy too much of the computer's resources (memory).

<Procedures>
Memo: The following is explained using MP Navigator 3.0 procedures.
To scan using MP Navigator:
1. Launch MP Navigator and click Photos/Documents (Platen) on the Scan/Import tab.
80006642en_05sj00759_en_00.jpg- The window you see varies according to the printer model.
2. When the Photos/Documents (Platen) window is displayed, click Specify.
80006642en_05sj00760_en_02.jpg
3. When the Scan Settings window is displayed, select the resolution in Scanning Resolution.
If necessary, set other items as well.
80006642en_05sj00760_en_03.jpg
4. Click OK.
5. In the Photos/Documents (Platen) window, click Scan to start scanning.
6. Changing the resolution is completed.


To scan using the scanner driver:
1. Launch MP Navigator and click Open Scanner Driver on the Scan/Import tab.
80006642en_05sj00765_en_01.jpg- The window you see varies according to the printer model.
2. Change the resolution.
According to your purpose, set the resolution in Simple Mode with ease, or in Advanced Mode with a detailed setting.
- To set the resolution in Simple Mode:
(1) Select the Simple Mode tab.
(2) Select the output resolution from the Destination pulldown menu.
If necessary, set other items.
80006642en_05sj00760_en_05.jpg
- To set the resolution in Advanced Mode:
(1) Select the Advanced Mode tab.
(2) In Output Resolution, select one of the preset resolution, or enter the number from 25 to 19200 to specify your favorite resolution.
If necessary, set other items.
80006642en_05sj00760_en_06.jpg
3. Click Scan to start scanning.
4. Changing the resolution is completed.

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1 Answer

I have vertical lines in my photos when i scan them


If the lines are in the same location for all scanned outputs, it is clearly dust on the scanner glass. Clean it thoroughly.
S. Mohan, India

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